Scanned from the negative. This was most likely taken by my father (probably in late 1946 or 1947).
The girl with the balloon, in front, and the little one in the upper left are my two oldest siblings. The two next to the younger sister look ready for Garry Winogrand and the 1964 World's Fair.
My oldest sister's somewhat edited response to seeing this:
"OMG, I totally love this photo. Yes, I remember some of those kids... The guy to my right was the kid who tripped me when he was with a group of other boys who were lying together on the ground and challenging me to jump over them. I was doing great until this boy raiised his leg as I passed over him and sent me flying...I had a crush on him and suspect he had one on me, hence the "boy way" of showing it...
The girl to the far right in the upper row I remember being named Betsy. The girl to my left is Connie. She was my best friend...a Mormon with whom I got into a fight over religion: I told her (erroneously) that 10 venial sins added up to a mortal sin. She disagreed. I stormed off to my apartment and she to hers and when I explained to Mom what the fight was about, Mom said I had that wrong... So much for my child's understandiing of Catechism ... After a few hours I trekked outside and found Connie. We made up and continued to be best friends."